It is very easy o connect two solar panels to one controller. All you have to do is follow the below-mentioned steps. Let’s take a look at them:
Step 1: Connect The Battery With Controller
The very first step is to connect the battery to your charge controller. It is very important to perform this step. If you directly connect the charge controller to the solar panel, you may get at the risk of destroying the charge controller in the process.
The wire thickness depends on the current your charge controller is going to send to the batteries. For example, with Renogy’s Rover 20A, you need wires that are able to carry up a minimum of 25 Amps or more and use a 15 Amp fuse for each one (Only fuse positive). If using flexible copper wire, then this AWG12 will do nicely but make sure it has at least 6 feet in length and place these fuses as close as possible near battery terminals.
Step 2: Now Connect The Both Solar Panels Together
In this step, you will wire your solar panels together. You can do so in series or parallel to add up voltage and current, respectively. If the wiring is in series with the same-sized wires, a fuse is necessary for safety purposes while it’s not needed when doing so in parallel if using different sized wires on both sides of the connection point – but always remember to check your datasheet! You can also use an inline MC4 connector fuse.
Step 3: Connect The Solar Panels With Charge Controller
The wire from the solar panel will be too short of reaching your charge controller. Extend it with this wire so you can take advantage of that sun-soaked goodness! When wiring, try a series connection first. Place your battery as close to the charge controller and panels for less loss in power during transmission. If there’s an extra length on one end, cut them down off at equal lengths – don’t waste all that sunshine just because some wires were longer than others!
Step 4: Connect the loads
If you have small DC loads, connect them to the load terminal on the charge controller or battery terminals for an inverter. The wire diameter will depend upon what type of current is running through it. If 100 amps go through a cable, then that needs to be considered when sizing your cables and fuses.
We all know that solar energy is the biggest way to solve the energy crisis. Install the solar panels today and make yourself tension-free.